文献类型：期刊文献

英文题名：K-Promoted Hydrotalcites for CO2 Capture in Sorption Enhanced Reactions

作者：Wu, Yi-Jiang[1];Li, Ping[2];Yu, Jian-Guo[2];Cunha, Adelino F.[1];Rodrigues, Alirio E.[1]

机构：[1]Univ Porto, Associated Lab LSRE LCM, Lab Separat & React Engn LSRE, Dept Chem Engn,Fac Engn, P-4200465 Oporto, Portugal;[2]East China Univ Sci & Technol ECUST, Coll Chem Engn, State Key Lab Chem Engn, Shanghai, Peoples R China

年份：2013

卷号：36

期号：4

起止页码：567

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;EI(收录号：20131416170071);WOS:【SCI-EXPANDED(收录号:WOS:000316630500009)】；

基金：YJW gratefully acknowledges the doctoral grant from China Scholarship Council (2010674011).AFC is gratefully to Fundacaopara a Ciencia e Tecnologia (FCT), Portugal, for providing financial support for this research program and the postdoctoral grant (SFRH/BPD/62968/2009). The authors are also thankful for LSRE financing by FEDER/POCI/2010.

语种：英文

外文关键词：CO2 sorption; Hydrotalcite-like compound; Sorption-enhanced reaction

摘要：Potassium-promoted hydrotalcite-like material was prepared with potassium nitrate as the K precursor. The highest ever reported CO2 adsorption capacity (1.13molkg1) was obtained at 656K with pCO2=0.5bar at humid conditions. A mathematical model was developed and it satisfactorily simulated the adsorption and desorption processes. The stability of the material was tested with repeated adsorption/desorption cycles; the CO2 adsorption capacity decreased around 7% after ten cycles. In addition, regeneration was performed with temperature swing operation (from 656K to 708K), where a complete regeneration was achieved within 60min, which reduced to half the time required for regeneration under isothermal conditions.